edu.stanford.nlp.trees.tregex.tsurgeon
Class TsurgeonPattern

java.lang.Object
  edu.stanford.nlp.trees.tregex.tsurgeon.TsurgeonPattern

Direct Known Subclasses:

CoindexNodes

public abstract class TsurgeonPattern
extends java.lang.Object

An abstract class for patterns to manipulate Trees when successfully matched on with a TregexMatcher.

Author:

Roger Levy

Method Summary

abstract Tree	evaluate(Tree t, TregexMatcher m) Evaluates the pattern against a Tree and a TregexMatcher that has been successfully matched against the tree.
protected void	setRoot(edu.stanford.nlp.trees.tregex.tsurgeon.TsurgeonPatternRoot root)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

setRoot

protected void setRoot(edu.stanford.nlp.trees.tregex.tsurgeon.TsurgeonPatternRoot root)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

evaluate

public abstract Tree evaluate(Tree t,
                              TregexMatcher m)

Evaluates the pattern against a Tree and a TregexMatcher that has been successfully matched against the tree.

Parameters:

t - the Tree that has been matched upon; typically this tree will be destructively modified.

m - the successfully matched TregexMatcher

Returns:

some node in the tree; depends on implementation and use of the specific subclass.